11123423 has 8 divisors (see below), whose sum is σ = 12065760. Its totient is φ = 10213120.

The previous prime is 11123393. The next prime is 11123471. The reversal of 11123423 is 32432111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11123423 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11123023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7283 + ... + 8676.

It is an arithmetic number, because the mean of its divisors is an integer number (1508220).

Almost surely, 2^11123423 is an apocalyptic number.

11123423 is a deficient number, since it is larger than the sum of its proper divisors (942337).

11123423 is a wasteful number, since it uses less digits than its factorization.

11123423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16017.

The product of its digits is 144, while the sum is 17.

The square root of 11123423 is about 3335.1796053586. The cubic root of 11123423 is about 223.2267061115.

Adding to 11123423 its reverse (32432111), we get a palindrome (43555534).

The spelling of 11123423 in words is "eleven million, one hundred twenty-three thousand, four hundred twenty-three".